linux-kernel - Re: [PATCH v2 1/4] dt-bindings: display: msm: Convert GMU bindings to YAML

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Message-ID: <20200226163342.GA26694@bogus>
Date:   Wed, 26 Feb 2020 10:33:42 -0600
From:   Rob Herring <robh@...nel.org>
To:     Jordan Crouse <jcrouse@...eaurora.org>
Cc:     linux-arm-msm@...r.kernel.org, smasetty@...eaurora.org,
        John Stultz <john.stultz@...aro.org>,
        Sean Paul <sean@...rly.run>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        Rob Clark <robdclark@...il.com>,
        David Airlie <airlied@...ux.ie>,
        Mark Rutland <mark.rutland@....com>,
        freedreno@...ts.freedesktop.org, Daniel Vetter <daniel@...ll.ch>
Subject: Re: [PATCH v2 1/4] dt-bindings: display: msm: Convert GMU bindings
 to YAML

On Thu, Feb 20, 2020 at 11:26:53AM -0700, Jordan Crouse wrote:
> Convert display/msm/gmu.txt to display/msm/gmu.yaml and remove the old
> text bindings.
> 
> Signed-off-by: Jordan Crouse <jcrouse@...eaurora.org>
> ---
> 
>  .../devicetree/bindings/display/msm/gmu.txt        | 116 ------------------
>  .../devicetree/bindings/display/msm/gmu.yaml       | 130 +++++++++++++++++++++
>  2 files changed, 130 insertions(+), 116 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/display/msm/gmu.txt
>  create mode 100644 Documentation/devicetree/bindings/display/msm/gmu.yaml


> diff --git a/Documentation/devicetree/bindings/display/msm/gmu.yaml b/Documentation/devicetree/bindings/display/msm/gmu.yaml
> new file mode 100644
> index 0000000..776ff92
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/msm/gmu.yaml
> @@ -0,0 +1,130 @@
> +# SPDX-License-Identifier: GPL-2.0-only
> +# Copyright 2019-2020, The Linux Foundation, All Rights Reserved
> +%YAML 1.2
> +---
> +
> +$id: "http://devicetree.org/schemas/display/msm/gmu.yaml#"
> +$schema: "http://devicetree.org/meta-schemas/core.yaml#"
> +
> +title: Devicetree bindings for the GMU attached to certain Adreno GPUs
> +
> +maintainers:
> +  - Rob Clark <robdclark@...il.com>
> +
> +description: |
> +  These bindings describe the Graphics Management Unit (GMU) that is attached
> +  to members of the Adreno A6xx GPU family. The GMU provides on-device power
> +  management and support to improve power efficiency and reduce the load on
> +  the CPU.
> +
> +properties:
> +  compatible:
> +    items:
> +      - enum:
> +          - qcom,adreno-gmu-630.2
> +      - const: qcom,adreno-gmu
> +
> +  reg:
> +    items:
> +      - description: Core GMU registers
> +      - description: GMU PDC registers
> +      - description: GMU PDC sequence registers
> +
> +  reg-names:
> +    items:
> +      - const: gmu
> +      - const: gmu_pdc
> +      - const: gmu_pdc_seq
> +
> +  clocks:
> +    items:
> +     - description: GMU clock
> +     - description: GPU CX clock
> +     - description: GPU AXI clock
> +     - description: GPU MEMNOC clock
> +
> +  clock-names:
> +    items:
> +      - const: gmu
> +      - const: cxo
> +      - const: axi
> +      - const: memnoc
> +
> +  interrupts:
> +    items:
> +     - description: GMU HFI interrupt
> +     - description: GMU interrupt
> +
> +
> +  interrupt-names:
> +    items:
> +      - const: hfi
> +      - const: gmu
> +
> +  power-domains:
> +     items:
> +       - description: CX power domain
> +       - description: GX power domain
> +
> +  power-domain-names:
> +     items:
> +       - const: cx
> +       - const: gx
> +
> +  iommus:
> +    $ref: /schemas/types.yaml#/definitions/phandle-array

Already has a type. Just need to define how many entries (maxItems).

> +    description:
> +       Phandle to a IOMMU device and stream ID. Refer to ../../iommu/iommu.txt
> +       for more information.

Drop. That's all iommus entries.

> +
> +  operating-points-v2:
> +    $ref: /schemas/types.yaml#/definitions/phandle
> +    description:
> +      Phandle to the OPP table for the available GMU frequencies. Refer to
> +      ../../opp/opp.txt for more information.

Just 'true' is enough here.

> +
> +required:
> +  - compatible
> +  - reg
> +  - reg-names
> +  - clocks
> +  - clock-names
> +  - interrupts
> +  - interrupt-names
> +  - power-domains
> +  - power-domain-names
> +  - iommus
> +  - operating-points-v2
> +
> +examples:
> + - |
> +   #include <dt-bindings/clock/qcom,gpucc-sdm845.h>
> +   #include <dt-bindings/clock/qcom,gcc-sdm845.h>
> +   #include <dt-bindings/interrupt-controller/irq.h>
> +   #include <dt-bindings/interrupt-controller/arm-gic.h>
> +
> +   gmu: gmu@...a000 {
> +        compatible="qcom,adreno-gmu-630.2", "qcom,adreno-gmu";
> +
> +        reg = <0x506a000 0x30000>,
> +              <0xb280000 0x10000>,
> +              <0xb480000 0x10000>;
> +        reg-names = "gmu", "gmu_pdc", "gmu_pdc_seq";
> +
> +        clocks = <&gpucc GPU_CC_CX_GMU_CLK>,
> +                 <&gpucc GPU_CC_CXO_CLK>,
> +                 <&gcc GCC_DDRSS_GPU_AXI_CLK>,
> +                 <&gcc GCC_GPU_MEMNOC_GFX_CLK>;
> +        clock-names = "gmu", "cxo", "axi", "memnoc";
> +
> +        interrupts = <GIC_SPI 304 IRQ_TYPE_LEVEL_HIGH>,
> +                     <GIC_SPI 305 IRQ_TYPE_LEVEL_HIGH>;
> +        interrupt-names = "hfi", "gmu";
> +
> +        power-domains = <&gpucc GPU_CX_GDSC>,
> +                        <&gpucc GPU_GX_GDSC>;
> +        power-domain-names = "cx", "gx";
> +
> +        iommus = <&adreno_smmu 5>;
> +        operating-points-v2 = <&gmu_opp_table>;
> +   };
> -- 
> 2.7.4
>